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1 HR Separation

tmurray

Registered User
Joined
Jun 10, 2011
Messages
1,920
Location
NB, Canada
Maybe it shouldn't be classified as storage. It's a small retail store that sells a variety of items and this would be their stockroom, Perhaps it should just be classified as M-1 309.1 Mercantile Group M "Mercantile Group M occupancy includes, among others, the use of a building or structure or a portion thereof for the display and sale of merchandise, and involves stocks of goods, wares or merchandise incidental to such purposes and accessible to the public."

Maybe it should be labeled a Stockroom
Potential just an accessory use to the mercantile area.
 

DJMenitoff

Sawhorse
Joined
Oct 12, 2020
Messages
9
Location
Michigan
Yep them pesky codes """shall be provided throughout all buildings with a Group R fire area."""""

Not sure your R setup, but have had enough people die or almost die, while sleeping at a work place.
They're not sleeping at the workplace per se. They would be in a totally separate unit with a 2hr fire separation and not penetrations or ability to go from one to the other. It's not like their sleeping on a cot in the back room of the store.
 

DJMenitoff

Sawhorse
Joined
Oct 12, 2020
Messages
9
Location
Michigan
Correct non-separated uses only. I don't have the sprinkler requirements in my jurisdiction so I forgot about that requirement.
So create a separate fire area. You will need a 2-hour fire barrier and no the trusses cannot penetrate the fire barrier. This will require you to only sprinkle the residential dwelling and not the entire building.
You interpret it that even with the 2hr separation we'll need to sprinkle the residential side?
 

DJMenitoff

Sawhorse
Joined
Oct 12, 2020
Messages
9
Location
Michigan
Not correct if you create two separate fire areas in this case an "M" and a "R" fire areas only the "R" fire area is required to be sprinkled

2018 IEBC
1101.1 Scope.
An addition to a building or structure shall comply with the International Codes as adopted for new construction without requiring the existing building or structure to comply with any requirements of those codes or of these provisions, except as required by this chapter. Where an addition impacts the existing building or structure, that portion shall comply with this code.


1102.3 Fire protection systems.
Existing fire areas increased by the addition shall comply with Chapter 9 of the International Building Code.
If you construct a 2-hour fire barrier you are not increasing the existing fire area therefore you are not required to sprinkle the existing fire area.
Unless you can find charging language in the IEBC telling you you must comply with Chapter 9 of the IBC then 903.2.8 is not applicable

[F] 903.2 Where required.
Approved automatic sprinkler systems in new buildings and structures shall be provided in the locations described in Sections 903.2.1 through 903.2.12.
If I am creating two separate fire areas and the Inspector said he is going to review the Residential side per the 2015 Michigan Residential code it would be reviewed as a single Family Dwelling which does not need sprinklers.
 

cda

Sawhorse 123
Joined
Oct 19, 2009
Messages
19,048
Location
Basement
I wish it were that easy....

Put a one foot space between the store wall and residential wall??? Totally two separate buildings??

Or is the idea the store owner is also the residential tenant?? And wants to walk thru a commond door to go back and forth??
 

mtlogcabin

Sawhorse
Joined
Oct 17, 2009
Messages
7,828
Location
Big Sky Country
You interpret it that even with the 2hr separation we'll need to sprinkle the residential side?
Yes because this is an IBC structure
If I am creating two separate fire areas and the Inspector said he is going to review the Residential side per the 2015 Michigan Residential code it would be reviewed as a single Family Dwelling which does not need sprinklers.
I believe your inspector is wrong to use the IRC for this project since it is not a detached structure

R101.2 Scope

The provisions of the Michigan residential code for 1- and 2-family dwellings shall apply to the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location, removal and demolition of detached 1- and 2-family dwellings and townhouses not more than 3 stories above grade plane in height with a separate means of egress and their accessory structures.
 

classicT

Sawhorse
Joined
Aug 2, 2017
Messages
1,582
Location
Washington State
Yes because this is an IBC structure

I believe your inspector is wrong to use the IRC for this project since it is not a detached structure

R101.2 Scope

The provisions of the Michigan residential code for 1- and 2-family dwellings shall apply to the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location, removal and demolition of detached 1- and 2-family dwellings and townhouses not more than 3 stories above grade plane in height with a separate means of egress and their accessory structures.
Yup!
 
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